Abstract
Many objectives of gear design and manufacturing can be considered and resolved by task-based multifunctional conceptual design method developed on the base of long career experience of design and production of numerous custom-made machine tools, innovative hand tools, and other mechanical devices. Requirements of geometrical accuracy and manufacturing efficiency are significant objectives for gear manufacturing technologies and gear chamfering technologies in particular. To satisfy those requirements, the proposed task-based conceptual design methodology is modified and applied in a way to take into account specific needs and features of gear chamfering procedure. The proposed method of conceptual design method can be advantageously pointed out from existing design methodologies by direct consideration of challenged functions at any step of mechanism synthesis, by simultaneous review of several tasks, by similarity and repeatability of analyses and synthesis tools and design cycles, by development and usage of mechanical-functional models, and by quantitative evaluation of different design scenarios. The methodology of creation of gear chamfering mechanisms is serving as an example for extending the scope of application of conceptual, parametric, and analytical resources of the task-based method to the case of surface reproduction technological machines. A concept of multi-degree freedom duplication of different geometrical shapes is the base of methodology for the creation of surface reproduction mechanisms when two parallel chains are providing firstly the geometrical order of surface reproduction and secondly the mechanical set of links necessary for such reproduction. Firstly, an analyzing methodology is applied for consideration and evaluation of various known conceptual diagrams and solutions for the tracking of chamfer surface. Then based on analyses of existing solutions, point and linear models are developed, and, finally, those models are upgraded by additional degrees of freedom and parallel chains to satisfy the remaining challenges and functions. Thus, several design scenarios are created and filtered for evaluation and rejection of not valid solutions. As a result, a series of novel structures are created, and proper manufacturing technology is worked out satisfying different needs of gear chamfering process. The conceptual design phase is commonly preceded by a phase of analyses of existing solutions and proceeded by a phase of parametrical design. Worthy to note that all three procedures are based on the same methodical base which conceptual stage has and hence have the same methodical values and same efficiency in application. An objective of parametric optimization for a type of gear chamfering mechanism is formulated as a requirement of providing a stable surface quality along the involute pattern of gear teeth. Scope of application of the developed methodology of conceptual design is generalized and extended for analyses and synthesis for a class of surface reproduction technological machines. Necessary and clarifying examples are coming to verify the validity and efficiency of task-based conceptual design methodology for surface reproduction and gear chamfering mechanisms.
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Darbinyan, H.V. (2022). Application of Task-Based Conceptual Design Method for Gear Chamfering Mechanisms. In: Radzevich, S.P. (eds) Recent Advances in Gearing. Springer, Cham. https://doi.org/10.1007/978-3-030-64638-7_5
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DOI: https://doi.org/10.1007/978-3-030-64638-7_5
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